Reachable Assertion Vulnerability in Jinja Minja Template Parser by ggml-org
CVE-2026-18581

4.8MEDIUM

Key Information:

Vendor

Ggml-org

Status
Llama.cpp
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18581?

A vulnerability has been identified in the Jinja Minja Template Parser of the ggml-org llama.cpp project. An attacker with local access can manipulate inputs in such a way that it leads to a reachable assertion, potentially compromising the application's stability. The issue was reported through an issue report, however, the vendor has not yet provided a response. This exploit has been publicly documented and poses a risk as it allows for possible local exploitation.

Affected Version(s)

llama.cpp e15efe0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-18581 - Proof of Concept

References

https://vuldb.com/vuln/385409
vdb-entrytechnical-description
https://vuldb.com/vuln/385409/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18581
third-party-advisory

CVSS V4

Score:
4.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

m00dy (VulDB User)
VulDB CNA Team
.